Flora of North America species comparison

ascending to erect, branching in distal 1/4–1/2, 8–27 cm, glabrous.

erect, branching in distal 1/10–1/4(–1/3), (1.5–)2–11(–16) cm, sparsely to densely villous especially proximally, hairs reddish brown.

usually opposite, sometimes alternate distally, membranous.

alternate, fleshy.

2–9;

petiole 0.2–10 mm, glabrous;

blade ovate to depressed-ovate or flabellate, 5–17(–20) × (3–)6–16 mm, base truncate to cuneate, margins 9–17(–21)-crenate or -crenate-dentate, glabrous, surfaces glabrous abaxially and adaxially.

absent or 1(–2);

petiole 3–16(–24) mm, glabrous or sparsely villous, hairs reddish brown;

blade ovate to broadly ovate, reniform, or flabellate, 3.5–12 × 4.5–19 mm, base cuneate, margins 3–7-crenate, usually glabrous, sometimes villous, hairs white, surfaces glabrous.

terminal or axillary solitary flowers or 3–20-flowered, open cymes;

bracts green, not purple-spotted, foliaceous, ovate to flabellate, 2–9 × 2–8 mm, margins 5–9-crenate.

terminal, 3–30-flowered, compact cymes;

bracts green or greenish yellow, usually purple-spotted, foliaceous, usually ovate to flabellate or, rarely, elliptic, 3–13 × 2–15 mm, margins subentire or 3–7-crenate.

absent or 0.1–1.8(–3) mm.

absent or 0.1–1.5 mm.

hypanthium green, not purple-spotted, turbinate, 0.8–1.8 × 1.5–3 mm, glabrous;

sepals spreading to erect, green, not purple-spotted, sometimes reddish brown-spotted distally, broadly ovate, 1–1.5 × 1.1–1.8 mm, apex obtuse to rounded;

nectary disc conspicuous, green or purple, 8-lobed;

stamens 8, 0.4–0.8 mm;

anthers yellow, 0.1–0.3 × 0.2–0.4 mm;

styles 0.3–0.4 mm.

hypanthium green or greenish yellow, sometimes purple-spotted distally, turbinate, 1.2–2.2 × 1.8–3.5 mm, glabrous;

sepals spreading, greenish yellow, purple, or reddish orange, usually purple-spotted throughout or distally, rarely not spotted, broadly ovate to depressed-ovate or nearly round, 0.9–2.3 × 1.2–3.1 mm, apex obtuse to rounded;

nectary disc prominent, yellow or purple, 8-lobed;

stamens 8, 0.7–0.9 mm;

anthers yellow or purple, 0.2–0.3 × 0.2–0.3 mm;

styles 0.5–0.9 mm.

10–20, dark brown, ovoid to ellipsoid, 0.7–1 mm, glabrous.

(2–)5–12, reddish brown, ovoid to ellipsoid, (0.8–)1–1.3 mm, glabrous.

leaves: petiole 3–10 mm, glabrous;

blade ovate to depressed-ovate or flabellate, 5–17(–20) × (3–)6–16 mm, base truncate to cuneate, margins 9–17(–21)-crenate or -crenate-dentate, not purple-spotted, glabrous, surfaces glabrous abaxially and adaxially.

leaves: petiole (7–)25–55(–68) mm, sparsely to densely villous, hairs reddish brown;

blade depressed-ovate to reniform, 4–19 × 7–24 mm, base cordate or truncate, margins 5–9-crenate, usually purple-spotted, usually ciliate, hairs white, surfaces glabrous or sparsely villous, especially near petiole, hairs usually white, brown, or reddish brown, sometimes purple.

= 18.

= 24.